By Steve Doty
This functional table reference for power engineers, now totally up to date and accelerated with new fabric all through, is designed to function a accomplished source for appearing strength audits in advertisement amenities. even supposing there are not any "typical" advertisement structures, the publication starts with the idea that once advertisement amenities are subdivided into different types in keeping with company sort, many beneficial styles will be pointed out which turn into typically acceptable to the functionality of an efficient power audit. accordingly, dialogue of approaches and instructions is supplied for a variety of company and development kinds, corresponding to faculties and faculties, eating places and quick foodstuff, hospitals and clinical amenities, grocery shops, laboratories, accommodation, house constructions, workplace constructions, retail, public protection, facts facilities, church buildings and spiritual amenities, libraries, laundries, warehouses and extra. All focal components of the development strength audit and evaluate are coated, together with construction envelope, lights, HVAC, controls, warmth restoration, thermal garage, electric platforms and utilities. the second one version presents new fabric on such themes as early alternative choice making, effect of rent preparations on strength venture curiosity, coordination of upstream/downstream set issues, semiconductor fab multi-stage HVAC air tempering, commissioning, overlapping heating and cooling and masses extra.
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For example: If 500,000 screwdrivers are manufactured in a year, the energy cost per screwdriver can easily be calculated. In this example, energy is seen as an ingredient to the produced item, similar to steel or labor, and savings equate to reduced part cost and increased profit. Restaurants (meals per day) and hotels (average percent occupancy) are similar applications of production metrics. 6 Commercial Energy Auditing Reference Handbook EUI ADJUSTMENT FOR OCCUPANCY In office buildings, EUI benchmark values are for an ‘average’ office building, which includes ‘average’ occupancy.
Example showing consistent use year-to-year. Figure 2-2a. Analyzing Energy Use Graphs 11 Energy usage creeping up year-to-year. Figure 2-2b. Example showing anomalies and prompting questions. This may have been a construction event, utility bill irregularity, or some other one-time event. Figure 2-2c. 12 Commercial Energy Auditing Reference Handbook Example showing anomalies and offering explanations. The heavy dashed line suggests what energy use might have been without summer break. Figure 2-2d.
Restaurants (meals per day) and hotels (average percent occupancy) are similar applications of production metrics. 6 Commercial Energy Auditing Reference Handbook EUI ADJUSTMENT FOR OCCUPANCY In office buildings, EUI benchmark values are for an ‘average’ office building, which includes ‘average’ occupancy. Since energy use is strongly dependent on occupancy, knowing the building occupancy for the period in question will allow a more accurate EUI. The reduction is not linear at zero occupancy, but fairly linear between 50-100% occupancy.